Tire valve



uw. 1,1925. 1,564,108 J. PLUTO v TIRE .VALVE Filed May 15p 1925 Il', I

IN VEN TOR. JossPH PLUTO ATToRNEY.

Patented Dec. l, 1925.

1,564,108 f'PAgTENT- OFFICE-l JOSEPH 1?LTO,;OF PONTIAC,l MICHIGAN.

TIRE VALVE.

'Application mea May 15,1925. serial No. 30,634.

To all whom t may comer/n.; 4

Be it known that I, JOSEPH PLUTO, a citizen of the United States, residing at Pontiac, in the county of Oakland and State of Michigan, have invented a new and useful Improvement in a Tire Valve, of which the following is a specification. j

My invention relates to a new and useful improvement in a tire valve and has for its object, the provision of a tire valve, adapted for mounting on a pneumatic tire, or the like, and so arranged and constructed as to provide an effective sealing means for pre venting the escape of air under pressure from said tire-through the valve stem.

l Another object of4 the invention is the provision of a tire valve, in which a positive means for seating the valve on its seat is provided, so 'as to assure an effective sealing, to prevent the kescape of air from the tire through the valve stem.

Other objects .of the invention willbe apj' a1'ent from the description of the construction, arrangement and operation of the va`- rious parts comprising the invention.

The invention consists in the combinations :and arrangements of parts hereinafter destantially line 2-2 of Fig. 1,

Fig. 3 is a sectional view taken on substa-ntially line 3-3 of Fig. 2. Y The inventionis shown applied to a tire 8, although, from the description, it will be apparent that the invention may be applied to other objects in which a `quantity of air is inserted under pressure. -f

In this connection, the invention, while being termed a tirevalvel vmay loe'understood to relate to the class of valves to which the present invention applies and covers the use of the invention in its various uses to which it may be applied.

As shown in the drawings, the invention is used with a valve stem 7, which is mounted upon a tire t-ubing 8, the stem 7 being provided with a suitable attaching seat 9. The construction of the attachment means for securing the valve stem to the tire forms no part of the present invention, and therefore, is not described in detail. Pro-vided'in the valve stem 7 is a. partition wall 1() having openings 11 and 12 formed therein.

As shown in Fig. 2, the upper portion of the valve stem 7 is slightly` enlarged to pro# vide a shoulder 13. Extending,upwardly from adjacent the shoulder 13 at diametrically opposite sides of the valve stem 7 are formed longitudinally extending` slots 14 and 14. Slidably positioned in the upper portion of the valve stem 7 is a stem 15 having trunnions 16 and 17 projecting outwardly therefrom at diametrically opposite points, adapted for engagement in the slots 14 and 14, the ends of the trunnions 16 and `17. terminating, so ask to lie flush with the periphery of the valve stem 7. Y The lower portion of the stem 15 is enlarged as at 18, the portion 18 terminating in a reduced portion 19 having peripheral groove f 20 formed therein, in which engages a ring 21, positioned thereon in embracing relation. This ring 21 is preferably made from rub- `ber or other material which will serve to act `as agasket, when engaging the shoulder `13.

The lower end of the reduced portion 19 is provided with the flared opening 23, to provide a conical valve seat, adapted toco-,operate with the conical head 25, which is car- `ried by the stem 24, positioned in the bore 22 l v The upper portion of vthe of the stem 15. valve stem 7 is interiorly threaded, as shown in Fig. 2, and adapted to receive an exteriorly threaded locking sleeve 26.

The construction is such that when the head 25 is placed in engagement with the partition 10 and the stem 15 inserted in the position shown in Fig. 2, a threading of the sleeve 26 into the stem 7 will serve t0 move the gasket 21 into close engagement with the shoulder 13, so as to effect a secure sealing of the valve stem 7 atthis point. f As the sleeve 26 is threaded into the stem 7, it engages at its inner end the trunnionsv 16 .and 17, so as to press `the gasket between vthe shoulder 13 and the enlarged portion 18 Vof the stem 15. At the same time, the head 25 is pressed securely into its seat 23, so as to securely seal the stem at this point and prevent the escape of air through the bore 22 in the stem 15. The hea-d 25 is preferably made from rubber, although any other desired material, such as cork, or the like, may be used.

When it is desired to inflate the tire, the

sleeve `2G may be unscrewed a couple of turns and the air `fhrced through the bore 22 will then move the head 25 from the seat 23, so as to permit the entry-of air into the valve stem 7, through the openings l1 and 12. Vhen the air is being forced through the bore 22, the head will be spaced from its seat 23, and lalso spaced slightly from the partition l0. After the tire has been properly inflated, a couple of turns of the locking sleeve 26 Will force the head 25 into the seat 23 and 7serve t0 vSeal tightly the joint at the shoulder 13, thus effecting a secure and positive sealing of the valve stem, so that lleakage of the air through the valve stem is prevented.

' If desired, the`hea`d 25 may betmoved into the seat 23 solely by the fessure of the air inthe valve stem 7 .alt ough it is believed morejefiicient in forcing it positively into its seat 23, as is shownv in Fig. 2.

.The con-struction is ay simple one with a minimum number of parts, and so arranged that these parts may be quickly land easily changed. The ring 2l is readily removable from its position in the groovej20, sothat it may be easily and quickly replaced with a. new gasket, when it becomes Worn. kThe Vhead and stem 24 mayalso kbe replaced when the head 25 becomes worn, so that a minimum number of parts will be replaced vthrough wear of the valve.

The construction shown is anefficient one of the purpose and `serves to prevent any leakage through the valve stem, thus overcoming difiiculties of valve stems as now on the market.

1While Ifliave illustrated and described the preferred form ofstrueture, I do not Wish to limit myself to the precise form of structure shown, but desire to avail vmyself of such variations and modifications as come within the scope of the appended claims.

lhat I claim is: f

1. A val-ve of the class described, comprising a stem; an interior abutment mounted in said stem; a valvev head adapted for engagement with said abutment; a valve seat bearing member, adapted for loosev positioning in said stem-yand means for moving said valve l'seat bearing memberv relatively to said valve head or'forcingl said valve head while in engagement with said abutment Ainto close engagement with said seat; and means for sealing'the interior of y,the lower portion of sai-d `valve stem from the foregoing specification.

exterior of said valve seat bea-ring member substantially simultaneously with the close engagement of said head with said seat.

2. 4A valve of the class described, comprising a valve stem; an abutment member mounted in said stem; a conically shaped valve head adapted for engagement with said abutment member; a conically shaped valve seat bearing member adapted for loose positioning in said stem, said valve seat being adapted for the reception of said valve l1ead';`a gasket mounted on lsaid Valve seat bearing member; a shoulder formed on the inner surface of said valve stem, adapted for engaging said gasket; trunnions projecting outwardly from said valve seat bearvving member, and adapted for engagement in'longitudinally extending slots formed in said valve stem; and a sleeve adapted for threading into the upper end of said valve stem and for engaging at its inner end said trunnions, and adapted, upon further threading into said valve stem, for clamping saidV gasket yagainst said shoulder and forcing said valve'head into close engagement' with said seat.

3. A valve of the class described, comprising a'valve stem;-an abutment member mounted in said stem; a conlcally shaped valve head adapted for engagement with said abutment member; a guide rod projecting outwardly from'the apex of said valve head; a seat-bearing member loosely positioned in said stem and having a conically shaped valve seat atits inner end adapted for the recept-'ion of said vhead and provided with abore for the reception of said guide rod; a gasket mounted on said seat bearing member; a `shoulder formed on the inner surface of said valve stem for engaging said gasket; a pair of trunnions projecting outwardly diametrically opposite each other from said seat bearing member and engaging in longitudinally extending slots formed kin said valve stem; anda sleeve adapted for threading into the upper end of said valve stem and engagingl at its inner end said trunnions and adaptedupon threading into said valve stem sufficiently 'for clamping said gasket againstsaid vshoulder and `for forcing said seat 'bearing member in.-

Wardfly for Vforcing said-valve head into close engagementV with .Saidr'seat 1n testimony whereof, If'heve sig-ned lthe JosErHmPLUTo.

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